Are snails born with their shells?
Try 3 issues of BBC Science Focus Magazine for £5!
There's a reason why snails need to eat eggs for breakfast.
Asked by: Katy Williams, Burntwood
Yes, although the shell is transparent and soft to begin with. Snails need calcium to harden their shells and the first thing a newly hatched snail does is to eat the casing of its own egg to absorb calcium. Some snails will also cannibalise the shells of their unhatched siblings. Over the next three months, the shell gets thicker and acquires the full adult colouration.
Subscribe to BBC Focus magazine for fascinating new Q&As every month and follow @sciencefocusQA on Twitter for your daily dose of fun science facts.
- Try your first 6 issues for just £9.99 when you subscribe to BBC Science Focus Magazine.
- Risk - free offer! Cancel at any time when you subscribe via Direct Debit.
- FREE UK delivery.
- Stay up to date with the latest developments in the worlds of science and technology.